75552989 has 4 divisors (see below), whose sum is σ = 75575424. Its totient is φ = 75530556.

The previous prime is 75552977. The next prime is 75553013. The reversal of 75552989 is 98925557.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75552989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75552929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5027 + ... + 13280.

It is an arithmetic number, because the mean of its divisors is an integer number (18893856).

Almost surely, 2^75552989 is an apocalyptic number.

It is an amenable number.

75552989 is a deficient number, since it is larger than the sum of its proper divisors (22435).

75552989 is a wasteful number, since it uses less digits than its factorization.

75552989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22434.

The product of its digits is 1134000, while the sum is 50.

The square root of 75552989 is about 8692.1222379808. The cubic root of 75552989 is about 422.7502600995.

The spelling of 75552989 in words is "seventy-five million, five hundred fifty-two thousand, nine hundred eighty-nine".